PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-22:12:50
G01     247.9          33.7               11.2 +/-    1.77      18.2 +/-    1.77  0.030 / 0.030
G03     315.2          46.4                8.3 +/-    0.76      11.0 +/-    0.76  0.030 / 0.030
G11     235.4          11.3               10.2 +/-    9.34      27.6 +/-    9.34  0.110 / 0.210
G14     63.5           38.9                7.6 +/-    1.64      11.2 +/-    1.64  0.100 / 0.170
G16     164.7          18.8                9.2 +/-   12.74      20.7 +/-   12.74  0.030 / 0.040
G22     301.1          67.9                9.2 +/-    0.55       9.9 +/-    0.55  0.030 / 0.040
G23     288.5          20.5                9.6 +/-    1.86      20.9 +/-    1.86  0.090 / 0.160
G26     136.0          39.7               11.2 +/-    1.62      16.4 +/-    1.62  0.070 / 0.140
G31     39.8           57.7                7.5 +/-    0.63       8.7 +/-    0.63  0.130 / 0.090
G32     79.4           21.9                7.7 +/-    1.56      16.2 +/-    1.56  0.080 / 0.090